From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80164C433C1 for ; Tue, 23 Mar 2021 13:55:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3DCC26199F for ; Tue, 23 Mar 2021 13:55:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231702AbhCWNzW (ORCPT ); Tue, 23 Mar 2021 09:55:22 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:14131 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231895AbhCWNyz (ORCPT ); Tue, 23 Mar 2021 09:54:55 -0400 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4F4Xr525Kmz19HXN; Tue, 23 Mar 2021 21:52:53 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.498.0; Tue, 23 Mar 2021 21:54:42 +0800 From: Miaohe Lin To: CC: , , , , , , , Subject: [PATCH v2 0/5] Cleanup and fixup for mm/migrate.c Date: Tue, 23 Mar 2021 09:54:00 -0400 Message-ID: <20210323135405.65059-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, This series contains cleanups to remove unnecessary VM_BUG_ON_PAGE and rc != MIGRATEPAGE_SUCCESS check. Also use helper function to remove some duplicated codes. What's more, this fixes potential deadlock in NUMA balancing shared exec THP case and so on. More details can be found in the respective changelogs. Thanks! v1->v2: Fix removing the wrong assertion per Rafael. Use pr_warn_once() instead per David. Collect Reviewed-by tag. Miaohe Lin (5): mm/migrate.c: remove unnecessary VM_BUG_ON_PAGE on putback_movable_page() mm/migrate.c: remove unnecessary rc != MIGRATEPAGE_SUCCESS check in 'else' case mm/migrate.c: fix potential indeterminate pte entry in migrate_vma_insert_page() mm/migrate.c: use helper migrate_vma_collect_skip() in migrate_vma_collect_hole() mm/migrate.c: fix potential deadlock in NUMA balancing shared exec THP case mm/migrate.c | 42 +++++++++++++++++++----------------------- 1 file changed, 19 insertions(+), 23 deletions(-) -- 2.19.1